What animal would win in these fights?

Please provide me with the animals you'd like to see fight! I need to know which animals you're interested in to tell you who would win. For example, you could say:

* "Which animal would win in a fight: a lion or a tiger?"

* "Would a bear or a wolf be victorious in a battle?"

* "Who would win in a fight between a crocodile and a hippopotamus?"

Once you give me the animals, I can give you my best guess based on their size, strength, weapons, and fighting styles.